Improved apparatus for disintegrating ores



To whom these presents shall come:

"tn'ted 51ans ALMARIN B. PAU-L, 0FA SAN FRANCISCO, CALIFORNIA.

Letters Patent No. 101,500, dated April 5, 1870;

IMPROVE!) APPARATUS FOR DISINTEG-RATING- CRES.

The Schedule referred to in these Letters Patent and making part of the:ame

Be it knownthat I, ALMARIN B. PAUL, of the city and county of SanFrancisco, California, have in'vented a new and useful System ofPulverizing and Preparing Ores for Amalgamation; and the followingdescription, taken together with the drawings, the figures and lettersattached, will enable any one skilled in the art to make and use thesame.

The purpose of myinvention is to make a pulverizer in such a manner astol be heated, and at the same time so constructed, in respect to smoke,as. not to be detrimental to the ore during pnlverization or dischargingof same from, when pulverized.

The main object, however, is to facilitate pulverization by drying, aswell as the calcination and combustion of metallic ores, by the means,of artificial heat during the time of pulvelization, and for the betterventilating and amalgamating of the metals of same after beingdischarged.

I take an ironcylnder of any given size, either as to diameter orlength, (the best proportion being, however, one-third longer than itsdiameter,) which is made 'to-revolve on hollow axles or `trunnions.

`'.'lhis cylinder is inclosed in an iron casing, the end of which shouldbe'made of cast-iron', and sufficiently strong to support the barrels,with bearings for trunnions cast thereon. l

The circle and sides can be made of sheet-iron, of suicient strength tonot warp by heating. The interior of the casing is i partitionedo1',onethird or onequarter space beingtaken for the fire-place, theremainder to be the dust-chamber and apartment for receiving dischargedore.

The partition issoconstructed as to encircle the cylinder, and as closeas the revolving barrel will allow.

Doors for the lire-place, or discharged ore apartment, can beconstructed to-suit, either on ends or sides.

The operation is thus: A given 'quantity of iron balls or buttons,heavier pieces of quartz, or hard stone, are introduced as pulverizers.The ore in a finer size, and suitable for pulvel-ization, is thenintroduced into the cylinder through the hollow trunnions or sideopening, as desired, and in quantities proportional to size of cylinder,but never to exceed one-half the capacity of cylinder as a circle. Thewhole mass is then set to revolving by suitable gearing, and heated bythe fire to a fair dryi-ng and Ventilating heat, and to ygain'what Iterm an electrical condition of .the ore, but not'what may be termed adesulphurizing degree.

N o. 1 is a side View of cylinder and easing.

No. 4 2 is a sectional view of cylinder and casing.

N o. 3 is an end view, showing trunnions.

A is partition.

B, fire-place.

C, ore-chamber.

D are hollow trunnions.

E, sieve fordischarging ore.

F, doors.

G, pulley.

What I claim isl. The drying, Ventilating, and heating of ores duringthe process of pulverization, by the means of artiicial heat.

2. The combination of furnace and discharge apartments, for the purposesas specified.

3. The heating of ores for the facilitating pulverization and moreperfect amalgamation by the dry amalgamating process.

Witnesses:

J OHN MULLEN, KATE M. ATKINSON.

`ALMARIN B. PAUL.

